1972. DeLong, Richard M. by Richard M. DeLong. Scale 1:24,000.
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1975. Ohio. Division of Geological Survey. Scale 1:12,000. by Stephen P. Reidel.
1956. Ohio State University. Institute of Geodesy, Photogrammetry and Cartography. Sponsored by the Development Fund, the Graduate School and the Department of Geology. The Anomalies refer to the International Gravity Formula. by ... Ohio. Division of Geological Survey.
1992. Wade, Tim. This raster layer is a 540 meter resolution grid map of the conterminous United States in GeoTIFF format, created from National Land Cover Data (NL... National Atlas of the United States.
2004. National Atlas of the United States. This point shapefile includes cities in the United States, Puerto Rico and the U.S. Virgin Islands. These cities were collected from the 1970 Natio... National Atlas of the United States.
2014. National Atlas of the United States. This point shapefile includes cities and towns in the United States, Puerto Rico, and the U.S. Virgin Islands. A city or town is a place with a rec... National Atlas of the United States.
2002. Ritters, Kurt. This raster layer is a grid map of North America including the Caribbean and most of Mexico in GeoTIFF format. The map layer is an excerpt from a g... National Atlas of the United States.
2003. USGS National Center for EROS. The North America Shaded Relief data were derived from the GTOPO30 elevation data. GTOPO30 is a global digital elevation model (DEM) with a horizon... National Atlas of the United States.
1934. United States. Works Progress Administration of Pennsylvania. Statement of responsibility: [Works Progress Administration of Pennsylvania]. Relief on most maps shown by contours and spot heights. WPA Project N... Works Progress Administration of Pennsylvania.
1934. United States. Works Progress Administration of Pennsylvania. Statement of responsibility: [Works Progress Administration of Pennsylvania]. Relief on most maps shown by contours and spot heights. WPA Project N... Works Progress Administration of Pennsylvania.